Question

—what do you think of the matter?

Answer 1

A

made it clear说明白；took it for granted认为理所当然；made sure确保。句意：你认为这件事情怎么样？难道你不记得我已经说清楚了它是一个大麻烦。Made的真正宾语是that it was troublesome，所以用it作形式宾语。选A。